Radial power clean surge suppressors give musicians, engineers, producers, studio owners, commercial facilities, and anyone working with valuable electronic equipment protection from power surges that can damage or destroy music equipment instantaneously. Eight rear panel outlets are provided (four with wall-wart spacing to accommodate any PSU size), along with three front panel outlets and a USB charging port to easily power personal devices. A heavy-duty power on/off switch, rugged outlet connectors, and steel construction ensure that the Power-1 performs night after night without fail. ? Made-in USA MOV? (Metal-Oxide Varistor) ? High rejection RF interference filter ? Front panel USB charging port ? Multiple front and rear outlets with wall-wart spacing ? Built Radial tough? to handle years of touring use Unlike competitive products that utilize low quality MOV's (Metal Oxide Varistor) for surge protection, both Radial Power units are built using a USA made MOV. This critical component has been proven to offer superior thermal protection and have a much longer lifespan than the alternatives. Both units utilize shunt mode technology and are non-ground contaminating for lower system noise. A high-rejection RF interference filter is used to keep high frequencies and AM radio signals out of the power line, preventing contamination of audio signals.